Pulverizer-mill yoke



E. H. DIMLER. PULVERIZER MILL YOKEQ APPLICATION FILED APR. n, 1918.

PatentedSept, 13,1921.

M ATTORNEY section being taken on line drawings, in which- 1 UNITED sures irarsur to'rrrcsr EENEsr EH. "DIMLER, or scorn ETHLEH M PENNSYLVANIA, ASSIGNOR To BETHF fLEHEM FOUNDRY -& MACHINE 00., OF SOUTH BETHLEHEM, PENNSYLVANIA.-

I rnLvERrzEmMILI. YOKE.

To all whom; it may concern 2' Be it known that I, ERNEST H. DIMLER, of South Bethlehem, in the county of Northampton and in the "State of Pennsyl- Vania, have invented a certain new and useful Improvement in Pulverizer-Mill Yokes, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to improvements in mills for grinding and pulverizing materials of all kinds, as for .eX- ample cement, ore, etc.

The object of my invention is to provide an improved form of construction by means of which the yokes in pulverizer mills may be readily repaired and so that the broken parts may be removed and replaced when desired. I

A further object is to provide a construction of this character in which the breakable parts are arranged so that they maybe readily removed and replaced when necessary.

Another object of my invention is to provide constructions of this character which are an improvement upon the fan blade carrying yokes as shown in the patent to Fuller #1939521, October 1st, 1912.

Further objects of my invention will appear from the detailed description thereof contained hereinafter.

Inasmuch as my invention resides in the yoke construction to be used in the pulverizer mills as hereinafter set forth and as a substitute for the yoke present in the pulverizer mill shown in the patent to Fuller above referred to, I shall herein show and describe only the unitary yoke itself without showing and describing in detail the remainder of the machine in which it is used, and which machine may be otherwise the same as the machine shown and described in the Fuller patent aforesaid.

While my invention is capable of being embodied in many different forms, for the purpose of illustration I have shown only one form of the same in the accompanymg Figure 1 is a sectional view of a yoke made in accordance with my invention, the 11 of Fig. 2, lOOkiIlgiIl the direction of the arrows.

Fig. 2 is a vertical section Of the same;

Specification of Letters Patent. Pat t sept- 3, 7 Application filed April 17,1918. Serial No. 9, 7,

sides 3 to engage the driving member upon which the yoke is'carried. The fan center 1 has a plurality of radially directed recesses 3 upon its outer face locate d immediately above downWardlydircted holes 4 to receive bolts 5 for securing the same to a pusher member 6 having recesses '7 upon its lower face to receive the nuts of said bolts. The pusher. member 6 preferably is provided with an upwardly extending hub *6, uponwhich rests a downwardly directed hub 1 on the fan center' The fan center 1 is, furthermore, engaged with the pusher member 6 by a plurality-of interlocking projections 8 and 9 located upon these two hubs of the apparatus respectively. Around the periphery of the fan center 1 there is provided, furthermore, an annular projection 9 carrying a ed arms 9 which are connected together at their upper ends by a ring 9 integral there-, with. Integral'with said arms 9 there are also provided a plurality of brackets9 for supporting fan lolades9 secured thereto by rivets 9 There are also provided upon the arms 9 a plurality of lower brackets, 9 for supportmg a series of lower inclined I plurality of vertically-directpatent to F uller above referred to. Said arms 12 have,'furthermore, radial openings or channels 14 to lighten the construction as much as possible.

In the operation of my invention the yoke is made by securing together the fan center 1 with the pusher member 6 by means of bolts 5; and the yoke when made in this manner is effectively secured together so as to operate'to the same advantage as if it were made out of a si g e i g al part of metal. At the same time, however, in case any of the pusher arms 12 are broken ofi in the operation of the mill the pusher member 6 may be readily detached by removing the bolts 5 so as to'allow replacement by a new pusher member of the same character. Furthermore, if one of the yokes as shown in the patent to Fuller above referred to should become damaged by the breaking of one or more of the pusher arms therein said yoke may be repaired by cutting away the lower portion carrying the pusher arms so as to provide the alternating projections 8 and the remaining fan center may be then united with one of the pusher members 6 as described above. In this way not only may yokes be initially constructed as hereinabove described, but yokes such as shown in the Fuller patent referred to as well as the yokes in other pulverizing mills may be repaired, while retaining the fan center portion and the fans thereon undisturbed by the repair operation. In this way a great saving of expense may be accomplished in the operation of pulverizer mills. v

While I have described my invention above in detail, I wish it to'be understood means for supporting that many changes may be made therein without departing from the spirit thereof.

IVhat I claim is:

1. A yoke for pulverizer mills, comprising a pusher member formed to engage a driving member and having outwardly directed arms, a an center separate from said pusher member and resting upon the latter, said fan center formed to engage'a driving member and having means for supporting a plurality of fan blades, and means for detachably securing together said fan center and pusher member.

2. In combination, a pusher member having a central body formed to fit around a driving member and outwardly directed arms, and a separate fan center having a plurality of fan blades, said fan center also having a central body formed to fit around said driving member, said fan center being located above said pusher member. v

In testimony that I claim the foregoing I have hereunto set my hand.

' ERNEST H. DIMLER.

-VVitnesses JOHN W. ALBRIG T, WILLIAM A. BECKER. 

